Case for an electronic device



FIG. 1 is a perspective view of the front of a case for an electronic device showing my new design;

FIG. 2 is a perspective view of the back of a case for an electronic device showing my new design;

FIG. 3 is a front view of a case for an electronic device showing my new design;

FIG. 4 is a back view of a case for an electronic device showing my new design;

FIG. 5 is a side view of a case for an electronic device showing my new design;

FIG. 6 is a side view of a case for an electronic device showing my new design;

FIG. 7 is a top view of a case for an electronic device showing my new design;

FIG. 8 is a bottom view of a case for an electronic device showing my new design; and,

FIG. 9 is a cross section view of a case for an electronic device showing my new design taken along the line 9-9 in FIG. 4.

The broken lines shown in the drawing are for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a case for an electronic device, as shown and described. 